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  • fgregg · 5 ✖

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id html_url issue_url node_id user created_at updated_at ▲ author_association body reactions issue performed_via_github_app
1008166084 https://github.com/simonw/sqlite-utils/issues/365#issuecomment-1008166084 https://api.github.com/repos/simonw/sqlite-utils/issues/365 IC_kwDOCGYnMM48F2TE fgregg 536941 2022-01-08T22:32:47Z 2022-01-08T22:32:47Z CONTRIBUTOR

or using “ pragma optimize”

 
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 create-index should run analyze after creating index 1096558279  
1008164786 https://github.com/simonw/sqlite-utils/issues/365#issuecomment-1008164786 https://api.github.com/repos/simonw/sqlite-utils/issues/365 IC_kwDOCGYnMM48F1-y fgregg 536941 2022-01-08T22:24:19Z 2022-01-08T22:24:19Z CONTRIBUTOR

the out-of-date scenario you describe could be addressed by automatically adding an analyze to the insert or convert commands if they implicate an index

 
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 create-index should run analyze after creating index 1096558279  
1008164116 https://github.com/simonw/sqlite-utils/issues/365#issuecomment-1008164116 https://api.github.com/repos/simonw/sqlite-utils/issues/365 IC_kwDOCGYnMM48F10U fgregg 536941 2022-01-08T22:18:57Z 2022-01-08T22:18:57Z CONTRIBUTOR

the table with the query ran so bad was about 50k.

i think the scenario should not be worse than no stats.

i also did not know that sqlite was so different from postgres and needed an explicit analyze call.

 
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 create-index should run analyze after creating index 1096558279  
1008161965 https://github.com/simonw/sqlite-utils/issues/365#issuecomment-1008161965 https://api.github.com/repos/simonw/sqlite-utils/issues/365 IC_kwDOCGYnMM48F1St fgregg 536941 2022-01-08T22:02:56Z 2022-01-08T22:02:56Z CONTRIBUTOR

for options 2 and 3, i would worry about discoverablity.

in other db’s it is not necessary to explicitly call analyze for most indices. ie for postgres

The system regularly collects statistics on all of a table's columns. Newly-created non-expression indexes can immediately use these statistics to determine an index's usefulness.

i suppose i would propose raising a warning if the stats table is created that explains what is going on and informs users about a —no-analyze argument.

 
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 create-index should run analyze after creating index 1096558279  
1007844190 https://github.com/simonw/datasette/pull/1574#issuecomment-1007844190 https://api.github.com/repos/simonw/datasette/issues/1574 IC_kwDOBm6k_c48Ente fgregg 536941 2022-01-08T00:42:12Z 2022-01-08T00:42:12Z CONTRIBUTOR

is there a reason to not always use the slim option?

 
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 introduce new option for datasette package to use a slim base image 1084193403  

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